diff --git a/Source/Plugins/BuilderModes/ClassicModes/LinedefsMode.cs b/Source/Plugins/BuilderModes/ClassicModes/LinedefsMode.cs
index eb96a6e..db2130e 100644
--- a/Source/Plugins/BuilderModes/ClassicModes/LinedefsMode.cs
+++ b/Source/Plugins/BuilderModes/ClassicModes/LinedefsMode.cs
@@ -1201,6 +1201,23 @@ namespace CodeImp.DoomBuilder.BuilderModes
 			General.Interface.RedrawDisplay();
 		}
 
+		[BeginAction("selectnonessential")]
+		public void SelectNonEssential()
+		{
+			int counter = 0;
+			ICollection<Linedef> selected = General.Map.Map.GetSelectedLinedefs(true);
+			foreach (Linedef ld in selected)
+			{ 
+				if (ld.Back != null && ld.Front.Sector == ld.Back.Sector)
+					counter++;
+				else
+					ld.Selected = false;
+			}
+
+			General.Interface.DisplayStatus(StatusType.Action, "Selected only non-essential lines (" + counter + ")");
+			General.Interface.RedrawDisplay();
+		}
+
 		[BeginAction("dissolveitem", BaseAction = true)] //mxd
 		public void DissolveItem()
 		{
diff --git a/Source/Plugins/BuilderModes/Resources/Actions.cfg b/Source/Plugins/BuilderModes/Resources/Actions.cfg
index c07a481..03a8c5a 100644
--- a/Source/Plugins/BuilderModes/Resources/Actions.cfg
+++ b/Source/Plugins/BuilderModes/Resources/Actions.cfg
@@ -345,9 +345,9 @@ resetflags
 
 selectnonessential
 {
-	title = "Select non-essential vertices";
-	category = "vertices";
-	description = "This selects all vertices that are not essential to sector shapes from your selection.";
+	title = "Select non-essential vertices/lines";
+	category = "classic";
+	description = "This selects all vertices or lines, that are not essential to sector shapes, from your selection.";
 	allowkeys = true;
 	allowmouse = true;
 	allowscroll = true;